1) Pulmonary embolism (PE) was first described in the 18th century and risk factors include both modifiable factors like obesity and smoking as well as non-modifiable factors like age, family history, and cancer.
2) PE is classified by size from massive to small, with massive PE affecting half the pulmonary arteries and causing shock while small PE causes few symptoms.
3) Diagnosis involves assessment of clinical probability with tools like Wells Criteria followed by tests like CT, ventilation-perfusion scan, or ultrasound depending on the patient's situation.
4) Treatment involves anticoagulation with drugs like heparin or novel oral anticoagulants, with duration depending on prov
Pulmonary embolism - Diagnosis and managementDr Vivek Baliga
Pulmonary embolism is a common problem seen in medical practice. This presentation by Dr Vivek Baliga discusses the basic aspects and evidence behind current management.
DIAGNOSIS & MANAGEMENT OF PULMONARY HYPERTENSIONKamal Bharathi
Pulmonary hypertension (PH) is defined by a mean pulmonary artery pressure ≥25 mm Hg at rest, measured during right heart catheterization. There is still insufficient evidence to add an exercise criterion to this definition. The term pulmonary arterial hypertension (PAH) describes a subpopulation of patients with PH characterized hemodynamically by the presence of pre-capillary PH including an end-expiratory pulmonary artery wedge pressure (PAWP) ≤15 mm Hg and a pulmonary vascular resistance >3 Wood units. Right heart catheterization remains essential for a diagnosis of PH or PAH. This procedure requires further standardization, including uniformity of the pressure transducer zero level at the midthoracic line, which is at the level of the left atrium. One of the most common problems in the diagnostic workup of patients with PH is the distinction between PAH and PH due to left heart failure with preserved ejection fraction (HFpEF). A normal PAWP does not rule out the presence of HFpEF. Volume or exercise challenge during right heart catheterization may be useful to unmask the presence of left heart disease, but both tools require further evaluation before their use in general practice can be recommended. Early diagnosis of PAH remains difficult, and screening programs in asymptomatic patients are feasible only in high-risk populations, particularly in patients with systemic sclerosis, for whom recent data suggest that a combination of clinical assessment and pulmonary function testing including diffusion capacity for carbon monoxide, biomarkers, and echocardiography has a higher predictive value than echocardiography alone.
Pulmonary embolism - Diagnosis and managementDr Vivek Baliga
Pulmonary embolism is a common problem seen in medical practice. This presentation by Dr Vivek Baliga discusses the basic aspects and evidence behind current management.
DIAGNOSIS & MANAGEMENT OF PULMONARY HYPERTENSIONKamal Bharathi
Pulmonary hypertension (PH) is defined by a mean pulmonary artery pressure ≥25 mm Hg at rest, measured during right heart catheterization. There is still insufficient evidence to add an exercise criterion to this definition. The term pulmonary arterial hypertension (PAH) describes a subpopulation of patients with PH characterized hemodynamically by the presence of pre-capillary PH including an end-expiratory pulmonary artery wedge pressure (PAWP) ≤15 mm Hg and a pulmonary vascular resistance >3 Wood units. Right heart catheterization remains essential for a diagnosis of PH or PAH. This procedure requires further standardization, including uniformity of the pressure transducer zero level at the midthoracic line, which is at the level of the left atrium. One of the most common problems in the diagnostic workup of patients with PH is the distinction between PAH and PH due to left heart failure with preserved ejection fraction (HFpEF). A normal PAWP does not rule out the presence of HFpEF. Volume or exercise challenge during right heart catheterization may be useful to unmask the presence of left heart disease, but both tools require further evaluation before their use in general practice can be recommended. Early diagnosis of PAH remains difficult, and screening programs in asymptomatic patients are feasible only in high-risk populations, particularly in patients with systemic sclerosis, for whom recent data suggest that a combination of clinical assessment and pulmonary function testing including diffusion capacity for carbon monoxide, biomarkers, and echocardiography has a higher predictive value than echocardiography alone.
Pulmonary edema is often caused by congestive heart failure. When the heart is not able to pump efficiently, blood can back up into the veins that take blood through the lungs. As the pressure in these blood vessels increases, fluid is pushed into the air spaces (alveoli) in the lungs.
Pulmonary embolism - Notes are made from textbook of Internal medicine to assist medical students and residents to grasp subject in totality. Resources: Harrison's 20thEd, ESC 2019 guidelines on PE
Pulmonary edema is often caused by congestive heart failure. When the heart is not able to pump efficiently, blood can back up into the veins that take blood through the lungs. As the pressure in these blood vessels increases, fluid is pushed into the air spaces (alveoli) in the lungs.
Pulmonary embolism - Notes are made from textbook of Internal medicine to assist medical students and residents to grasp subject in totality. Resources: Harrison's 20thEd, ESC 2019 guidelines on PE
PowerPoint presentation about pulmonary embolism -- Teaching at Zagazig university cardiology department ,
Egypt in 2013 by Islam Ghanem , assistant lecturer of cardiology
Acute scrotum is a general term referring to an emergency condition affecting the contents or the wall of the scrotum.
There are a number of conditions that present acutely, predominantly with pain and/or swelling
A careful and detailed history and examination, and in some cases, investigations allow differentiation between these diagnoses. A prompt diagnosis is essential as the patient may require urgent surgical intervention
Testicular torsion refers to twisting of the spermatic cord, causing ischaemia of the testicle.
Testicular torsion results from inadequate fixation of the testis to the tunica vaginalis producing ischemia from reduced arterial inflow and venous outflow obstruction.
The prevalence of testicular torsion in adult patients hospitalized with acute scrotal pain is approximately 25 to 50 percent
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
New Drug Discovery and Development .....NEHA GUPTA
The "New Drug Discovery and Development" process involves the identification, design, testing, and manufacturing of novel pharmaceutical compounds with the aim of introducing new and improved treatments for various medical conditions. This comprehensive endeavor encompasses various stages, including target identification, preclinical studies, clinical trials, regulatory approval, and post-market surveillance. It involves multidisciplinary collaboration among scientists, researchers, clinicians, regulatory experts, and pharmaceutical companies to bring innovative therapies to market and address unmet medical needs.
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
2. History Susrutha describes swollen painful leg circa 600-1000 BCE Giovanni battistamargagni recognized blood clots in pulmonary vessels in patients suffering sudden death in 1761 In mid 1800 jean cruveilheir a french pathologist suggested role of venous inflammation& thrombosis
4. The classic description of radiographic findings by westermark in 1938 The description of electrocardiographic corpulmonale by Mcginn and white 1935 Echo in the diagnosis of PE by has its origin in case report by Covarrubias & colleagues in 1977
5. -- Modifiable Risk Factors for Venous Thromboembolism Obesity Metabolic syndrome Cigarette smoking Hypertension Abnormal lipid profile High consumption of red meat and low consumption of fish, fruits, and vegetables
6. -- Major Risk Factors for Venous Thromboembolism That Are Not Readily Modifiable Advancing age Arterial disease, including carotid and coronary disease Personal or family history of venous thromboembolism Recent surgery, trauma, or immobility, including stroke Congestive heart failure Chronic obstructive pulmonary disease Acute infection Air pollution Long-haul air travel Pregnancy, oral contraceptive pills, or postmenopausal hormone replacement therapy Pacemaker, implantable cardiac defibrillator leads, or indwelling central venous catheter
7. Hypercoagulable states Factor V Leiden resulting in activated protein C resistance Prothrombin gene mutation 20210 Antithrombin deficiency Protein C deficiency Protein S deficiency Antiphospholipid antibody syndrome
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9. Symptoms Otherwise unexplained dyspnea Chest pain, either pleuritic or “atypical” Anxiety CoughSigns Tachypnea Tachycardia Low-grade fever Left parasternal lift Tricuspid regurgitant murmur Accentuated P2 Hemoptysis Leg edema, erythema, tenderness
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11. -- Simplified Wells Criteria to Assess Clinical Likelihood of Pulmonary Embolism >1 score point = high probability ≤1 score point = non–high probability SCORE POINTS DVT symptoms or signs 1 An alternative diagnosis is less likely than PE 1 Heart rate >100/min 1 Immobilization or surgery within 4 weeks 1 Prior DVT or PE 1 Hemoptysis 1 Cancer treated within 6 months or metastatic 1
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13. Massive Pulmonary Embolism Patients with massive PE are susceptible to cardiogenic shock and multisystem organ failure. Renal insufficiency, hepatic dysfunction, and altered mentation are common findings. Thrombosis is widespread, affecting at least half of the pulmonary arterial vasculature. Clot is typically present bilaterally. Dyspnea is usually the most noticeable symptom; chest pain is unusual transient cyanosis is common, and systemic arterial hypotension requiring pressor support is frequent
14. Moderate to Large (Submassive) Pulmonary Embolism These patients frequently present with moderate or severe right ventricular hypokinesis as well as elevations in troponin, pro-BNP, or BNP, but they maintain normal systemic arterial pressure. Usually, one third or more of the pulmonary artery vasculature is obstructed. If there is no prior history of cardiopulmonary disease, they may appear clinically well, but this initial impression is often misleading. They are at risk for recurrent PE, even with adequate anticoagulation.
15. Most survive, but they may require escalation of therapy with pressor support or mechanical ventilation. Therefore, especially if moderate or severe right ventricular dysfunction persists, one should consider thrombolytic therapy or embolectomy. If neither thrombolysis nor embolectomy appears warranted, placement of an inferior vena caval filter is controversial but may be employed as a “back-up” in case heparin anticoagulation fails.
16. Small to Moderate Pulmonary Embolism This presentation is characterized by normal systemic arterial pressure, no cardiac biomarker release normal right ventricular function. Patients appear clinically stable. Adequate anticoagulation results in an excellent clinical outcome.
17. Pulmonary Infarction This syndrome is characterized by pleuritic chest pain that may be unremitting or may wax and wane. The pleurisy is occasionally accompanied by hemoptysis. The embolus usually lodges in the peripheral pulmonary arterial tree, near the pleura. Tissue infarction usually occurs 3 to 7 days after embolism. The syndrome often includes fever, leukocytosis, elevated erythrocyte sedimentation rate, and radiologic evidence of infarction.
18. Nonthrombotic Pulmonary Embolism They include fat, tumor, air, and amniotic fluid Fat embolism syndrome is most often observed after blunt trauma complicated by long bone fractures. Air embolus can occur during placement or removal of a central venous catheter. Amniotic fluid embolism may be catastrophic and is characterized by respiratory failure, cardiogenic shock, and disseminated intravascular coagulation. Intravenous drug abusers sometimes self-inject hair, talc, and cotton that contaminate the drug they have acquired. These patients also have susceptibility to septic PE, which can cause endocarditis of the tricuspid or pulmonic valves.
20. Biomarkers for detecting myocardial injury BNP & NT- Pro BNP cTroponin T & I H-FABP (Heart type) Growth differentiation factor -15
21. Plasma D-Dimer Assay This blood screening test relies on the principle that most patients with PE have ongoing endogenous fibrinolysis that is not effective enough to prevent PE but that does break down some of the fibrin clot to d-dimers Although elevated plasma concentrations of d-dimers are sensitive for the presence of PE, they are not specific. Levels are elevated for at least 1 week postoperatively and are increased in patients with myocardial infarction, sepsis, cancer, or almost any other systemic illness. Therefore, the plasma d-dimer assay is ideally suited for outpatients or emergency department patients who have suspected PE but no coexisting acute systemic illness. This test is generally not useful for acutely ill hospitalized inpatients because their d-dimer levels are usually elevated. A normal d-dimer assay appears to be as diagnostically useful as a normal lung scan to exclude PE. patients with a low clinical probability of PE who had negative d-dimer results, additional diagnostic testing was not necessary.
22. Electrocardiographic Signs of Pulmonary Embolism Sinus tachycardia Incomplete or complete right bundle branch block Right-axis deviation T wave inversions in leads III and aVF or in leads V1-V4 S wave in lead I and a Q wave and T wave inversion in lead III (S1Q3T3) QRS axis greater than 90 degrees or an indeterminate axis Atrial fibrillation or atrial flutter
23. Chest Radiography A near-normal radiograph in the setting of severe respiratory compromise is highly suggestive of massive PE. Major chest radiographic abnormalities are uncommon. Focal oligemia (Westermark sign) indicates massive central embolic occlusion. A peripheral wedge-shaped density above the diaphragm (Hampton hump) usually indicates pulmonary infarction. Subtle abnormalities suggestive of PE include enlargement of the descending right pulmonary artery. The vessel often tapers rapidly after the enlarged portion. PE.
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25. Echocardiographic Signs of Pulmonary Embolism Right ventricular enlargement or hypokinesis, especially free wall hypokinesis, with sparing of the apex (the McConnell sign) Interventricularseptal flattening and paradoxical motion toward the left ventricle, resulting in a D-shaped left ventricle in cross section Tricuspid regurgitation Pulmonary hypertension with a tricuspid regurgitant jet velocity >2.6 m/sec Loss of respiratory-phasic collapse of the inferior vena cava with inspiration Dilated inferior vena cava without physiologic inspiratory collapse Direct visualization of thrombus (more likely with transesophageal echocardiography)
26. Chest Computed Tomography Size, location, and extent of thrombus Other diagnoses that may coexist with PE or explain PE symptoms: Pneumonia Atelectasis Pericardial effusion Pneumothorax Left ventricular enlargement Pulmonary artery enlargement, suggestive of pulmonary hypertension Age of thrombus: acute, subacute, chronic Location of thrombus: pulmonary arteries, pelvic veins, deep leg veins, upper extremity veins Right ventricular enlargement Contour of the interventricular septum: whether it bulges toward the left ventricle, thus indicating right ventricular pressure overload Incidental masses or nodules in lung
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29. Magnetic Resonance Imaging Gadolinium-enhanced magnetic resonance angiography (MRA) is far less sensitive than CT for the detection of PE. However, unlike chest CT or catheter-based pulmonary angiography, MRA does not require ionizing radiation or injection of iodinated contrast agent. In addition, magnetic resonance pulmonary angiography can assess right ventricular size and function. Three-dimensional MRA can be carried out during a single breath-hold and may provide high resolution from the main pulmonary artery through the segmental pulmonary artery branches.
30. Pulmonary Angiography Invasive pulmonary angiography was formerly the reference standard for diagnosis of PE, but it is now rarely performed. It is an uncomfortable and potentially risky procedure. However, pulmonary angiography is required when interventions are planned, such as suction catheter embolectomy, mechanical clot fragmentation, or catheter-directed thrombolysis. In cases of chronic thromboembolic PE, pulmonary arteries appear pouched. The thrombus usually organizes with a concave edge. Bandlike defects called webs may be present, in addition to intimal irregularities and abrupt narrowing or occlusion of lobar vessels.
31. Lung scans depend on expert interpretation, and there is a great deal of interobserver variability even among experts. Only three indications to obtain a lung scan exist: (1) renal insufficiency, (2) anaphylaxis to intravenous contrast agent that cannot be suppressed with high-dose corticosteroids (3) pregnancy (lower radiation exposure to the fetus).
32. Contrast Venography Although contrast phlebography was once the reference standard for DVT diagnosis, venograms are now rarely obtained . Venography is costly, invasive, and potentially harmful. It can cause contrast-induced renal failure, anaphylaxis, or chemical phlebitis. Furthermore, difficulty in interpretation of contrast venograms causes considerable disagreement among experienced readers. Invasive contrast phlebography is required, of course, for interventional procedures such as catheter-directed thrombolysis, suction embolectomy, angioplasty, stenting, and placement of an inferior vena caval filter. In patients undergoing total hip or knee replacement, contrast venography is more sensitive than venous ultrasonography for the diagnosis of acute DVT.
33.
34. The Pulmonary Embolism Severity Index PREDICTOR SCORE POINTS Age, per year Age, in years Male sex 10 History of cancer 30 History of heart failure 10 History of chronic lung disease 10 Pulse ≥110/min 20 Systolic blood pressure <100 mm Hg 30 Respiratory rate ≥30/min 20 Temperature <36?C 20 Altered mental status 60 Arterial oxygen saturation <90% 20 Low prognostic risk is defined as ≤85 points.
35. Predictors of Increased Mortality Hemodynamic instability Right ventricular hypokinesis on echocardiogram Right ventricular enlargement on echocardiogram or chest CT scan Right ventricular strain on electrocardiogram Elevated cardiac biomarkers
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42. Use of Heparin Before and After Thrombolysis 1 Discontinue the continuous infusion of intravenous UFH as soon as the decision has been made to administer thrombolysis. 2 Proceed to order thrombolysis. Use the U.S. Food and Drug Administration–approved regimen of alteplase 100 mg as a continuous infusion during 2 hours. 3 Do not delay the thrombolysis infusion by obtaining an activated partial thromboplastin time (aPTT) . 4 Infuse thrombolysis as soon as it becomes available. 5 At the conclusion of the 2-hour infusion, obtain a stat aPTT . 6 If the aPTT is 80 seconds or less (which is almost always the case), resume UFH as a continuous infusion without a bolus. 7 If the aPTT exceeds 80 seconds, hold off from resuming heparin for 4 hours and repeat the aPTT. At this time, the aPTT has virtually always declined to <80 seconds. If this is the case, resume continuous infusion of intravenous UFH without a bolus.
49. Fondaparinux Dosing for Patients with Acute Pulmonary Embolism or DVT weight <50 kg 50-100 kg >100 k dose 5 mg 7.5 mg 10 mg
50. Synthetic direct Factor Xa inhibitor Rivaroxaban 10mg/d oral Apixaban 2.5 mg bd Betrixaban 15mg bd or 40 mg bd
51. Optimal Duration of Anticoagulation First provoked PE/proximal leg DVT 3 to 6 months First provoked upper extremity DVT or isolated calf DVT 3 months Second provoked VTE Uncertain Third VTE Indefinite duration Cancer and VTE Consider indefinite duration or until cancer is resolved Unprovoked PE/proximal leg DVT Consider indefinite duration First unprovoked calf DVT 3 months Second unprovoked calf DVT Uncertain
61. Catheter Embolectomy Interventional catheterization techniques[for massive PE include mechanical fragmentation of thrombus with a standard pulmonary artery catheter, clot pulverization with a rotating basket catheter, percutaneousrheolyticthrombectomy and pigtail rotational catheter embolectomy. Another approach is mechanical clot fragmentation and aspiration, which can be combined if necessary with pharmacologic thrombolysis Pulmonary artery balloon dilation and stenting can also be considered. Successful catheter embolectomy rapidly restores normal blood pressure and decreases hypoxemia. Catheter techniques have been limited by poor maneuverability, mechanical hemolysis, macroembolization, and microembolization.
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64. Surgical Embolectomy Emergency surgical embolectomy with cardiopulmonary bypass has reemerged as an effective strategy for management of patients with massive PE and systemic arterial hypotension or submassive PE with right ventricular dysfunction in whom contraindications preclude thrombolysis This operation is also suited for acute PE patients who require surgical excision of a right atrial thrombus or closure of a patent foramen ovale. Surgical embolectomy can also rescue patients refractory to thrombolysis.
78. General surgery Unfractionated heparin 5000 units SC bid or tidor Enoxaparin 40 mg SC qdor Dalteparin 2500 or 5000 units SC qd
79. Major orthopedic surgery Warfarin (target INR 2 to 3) or Enoxaparin 30 mg SC bid or Enoxaparin 40 mg SC qdor Dalteparin 2500 or 5000 units SC qdor Fondaparinux 2.5 mg SC qd Rivaroxaban 10 mg qd (in Canada and Europe) Dabigatran 220 mg bid (in Canada and Europe
80. Neurosurgery Unfractionated heparin 5000 units SC bid or Enoxaparin 40 mg SC qdand Graduated compression stockings or intermittent pneumatic compression Consider surveillance lower extremity ultrasonography
81. Oncologic surgery Enoxaparin 40 mg SC qd Thoracic surgery Unfractionated heparin 5000 units SC tidand Graduated compression stockings or intermittent pneumatic compression
87. Hospitalization with medical illness Unfractionated heparin 5000 units SC bid or tidor Enoxaparin 40 mg SC qdor Dalteparin 5000 units SC qdor Fondaparinux 2.5 mg SC qd (in patients with a heparin allergy such as heparin-induced thrombocytopenia) or Graduated compression stockings or intermittent pneumatic compression for patients with contraindications to anticoagulationConsider combination pharmacologic and mechanical prophylaxis for high-risk patients Consider surveillance lower extremity ultrasonography for intensive care unit patients
98. Massive Pulmonary Embolism Begin bolus high-dose intravenous unfractionated heparin as soon as massive pulmonary embolism is suspected. ▪ Begin continuous infusion of unfractionated heparin to achieve a target aPTT of at least 80 seconds. ▪ Try volume resuscitation with no more than 500 to 1000 mL of fluid. ▪ Excessive volume resuscitation will worsen right ventricular failure. ▪ Have a low threshold for administration of vasopressors and inotropes. ▪ Decide whether thrombolysis can be safely administered, without a high risk of major hemorrhage. ▪ If thrombolysis is too risky, consider placement of an inferior vena caval filter, catheter embolectomy, or surgical embolectomy. ▪ Do not use a combination of thrombolysis and vena caval filter insertion. The prongs of the filter insert into the caval wall. Concomitant thrombolysis predisposes to caval wall hemorrhage. ▪ Consider immediate referral to a tertiary care hospital specializing in massive pulmonary embolism.
99.
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101. increased pulmonary vascular resistance caused by vascular obstruction, neurohumoral agents, or pulmonary artery baroreceptors impaired gas exchange caused by increased alveolar dead space from vascular obstruction and hypoxemia from alveolar hypoventilation, low ventilation-perfusion units, and right-to-left shunting as well as impaired carbon monoxide transfer caused by loss of gas exchange surface; alveolar hyperventilation caused by reflex stimulation of irritant receptors; increased airway resistance due to bronchoconstriction; and decreased pulmonary compliance due to lung edema, lung hemorrhage, and loss of surfactant.